A few years ago, I discovered that benefit of walking. I know, I know. It sounds like a tired old tip. But listen.
I came to work for a mall, and found myself having to walk about the mall - practically all day! I would go home with my feet literally throbbing! I quit after a few months. But only later realized that, without meaning to, without making an effort at that time, I had lost most of my protruding belly, and gained some muscled on my legs. Imagine that. I shouldn't have quit! Haha!
But seriously, my point it that walking really helps. So let's not take that for granted.